(1) General-----------------------------------------------------------------------------1
(2) Frame Chart-------------------------------------------------------------------fig.1
(3) IC Function Introduction ------------------------------------------------------1
(5) IC Voltage --------------------------------------------------------------8
(6) Trouble shorting------------------------------------------------------------------9
C Bus Control ------------------------------------------------------------------5
4.1 Menu Entry -------------------------------------------------5
This chassis is consists of main IC TMPA8823-5VA4, ST4053. TMPA8823-5VA4 is an integrated circuit for a
PAL TV. A MCU and a TV signal processor (SP) are integraed in a 64-pin shrink DIP package. The MCU contains 8-bit
CPU,ROM,RAM,I/O ports,timer/counters, A/D converters,an on-screen display controller,remoter control interfaces,IIC
bus interfaces. The TV signal processor contains PIF,SIF,Video,multi-standard chroma,Sync,RGB processors.
(2) Frame Chart (see fig.1)
→
TUNER
TDL-3N1
AV/TV SWITCH
ST4053
AUDIO POWER
AN7522
PIF/SIF R, G, B
VT/BL BH/RF AGC
TMPA 8823
CRT
OSCILLLLATION
2SC3619 X 3
VM
V-OUT
LA78040
H-OUT
ST1803DF
+115V +25V +19V
SCAN
TRANSFORMER
B
24-
-4P
∽220V +13
ON/OFF POWER
C5299
fig.1
1
(3) IC Function Introduction
3.1 N501 TMPA8823-5VA4 Function: MCU and SP
Icon PIN Description
SDA2 1 IIC bus serial data input/output
MUTE 2 Mute Output
KEY 3 Key input
DVSS 4 GND connection
RESET 5 Reset signal input
XOUT 6 8 MHz oscillator connection
XIN 7 8 MHz oscillator connection
TEST 8 GND connection
DVDD 9 5V power supply
VVSS 10 GND connection
TV GND 11 GND terminal for Analog block
FBP IN 12 Input terminal for FBP
H.OUT 13 Horizontal driving pulse output
H.AFC1 14 H AFC filter connection
V.SAW 15 Terminal to be connected capacitor to generate V saw signal
V.OUT 16 Vertical driving pulse output
H.Vcc(9V) 17 Vcc terminal for DEF circuit
NC 18 No use
Cb in 19 Input terminal for Cb signal
Y in 20 Input terminal for Y signal
Cr in 21 Input terminal for Cr signal
DIG GND 22 GND terminal for Digital block
C in 23 Input terminal for Chroma signal
V2 in 24 Input terminal for Video signal
DIG Vdd 25 Vcc terminal for Digital block
CW out 26 Output terminal for fsc wave signal
ABCL in 27 Input terminal for ABL/ACL control
EW out 28 Output terminal for east-west correction singal
IF Vvv(9V) 29 Vcc terminal for IF circuit
TV out 30 Detected PIF signal output terminal
SIF out 31 Detected SIF signal output terminal
DC NF 34 Terminal to be connected capacitor for DC Negative feedback
PIF PLL 35 Loop filter for PIF PLL connection
IF Vvv(5V) 36 Vcc terminal for IF circuit
REG FIL 37 Terminal to be connected capacitor for stabilizing internal bias
DE-EMP 38 Terminal to be connected capacitor for SIF Det De-Emphasis
IF AGC 39 IF AGC filter connection
IF GND 40 GND terminal for IF circuit
2
IF IN 41 Input terminals for IF signals
IF IN 42 Input terminals for IF signals
RF AGC 43 RF AGC control level output
YC Vcc 44 Vcc terminal for Y/C circuit
Vsm out 45 Output terminal for Vsm signal
Black DET 46 Terminal to be connected with Black Det filter for black stretch
APC Filter 47 Terminal to be connected with APC filter for Chroma demodulation
IK IN 48 Sense ACB cathode current input
RGB Vcc 49 Vcc terminal for RGB circuit
R OUT 50 Output terminal for R signal
G OUT 51 Output terminal for G signal
B OUT 52 Output terminal for B signal
TV GND 53 GND terminal for Analog block
A GND 54 GND connection
A VDD 55 5V power supply
NC 56
SDA1 57 IIC bus serial data input/output
SCL1 58 IIC bus serial clock input
NC 59
VT 60 VT output
SCL2 61 IIC bus serial clock input
SYNC 62 Horizontal sync signal input
REMOTE 63 Remote controller signal input
POWER 64 Power control (On=Hi. Off=L)
3.2 N001\N002 ST4053 Function: I2C bus control , Audio/Video switching IC
Name Pin Function
RinV2 1 This pin is for input a right audio signal from an external source(V2 channel)
RinV1 2 This pin is for input a right audio signal from an external source(V1 channel)
VinV2 3 This pin is for input a composite video signal from an external source(V2 channel)
Vout 4 This pin is for output main channel composite video signal.
VinV1 5 This pin is for input a composite video signal from an external source(V1 channel)
BAND1 6 This pin is for output band1 to control tuner.
GND 7 This is the GND pin.
GND 8 This is the GND pin.
BAND2 9 This pin is for output band2 to control tuner.
BAND2 10 This pin is for output band2 to control tuner.
BAND2 11 This pin is for output band2 to control tuner.
LinV1 12 This pin is for input a left audio signal from an external source(V1 channel)
LinV2 13 This pin is for input a left audio signal from an external source(V2 channel)
Lout TV 14 This pin is for output left audio signal.
Rout TV 15 This pin is for output right audio signal.
Vcc 16 This is the power supply pin. Apply 9V to this pin.
3
,
3.3 N301 LA78040 Function: V-scan output
PIN FUNCTION
1 Vertical feedback
2 Vertical working power supply
3 Pump power supply
4 Ground
5 Vertical output
6 Vertical protection
7 Vertical drive signal input
3.4 N601 AN7522 Function: Audio power amplifier
Name Pin Function
Vcc 1
L Out
2,4
Sound working voltage (+12V)
Sound siqnal output
Gnd 3 Ground
Mute 5 Standby
L In 6 Audio signal L input
Gnd 7 Ground
R In 8 Audio signal R input
Volume 9 Sound volume DC level 1 control
R Out 10,12 Sound siqnal output
Gnd 11 Ground
(4) I2C Bus Control
4.1 Menu Entry
Press “D” button on the factory remote control to enter the “D” mode, the letter “D” will be displayed at the upper
right coner and the adjusting items will be displayed at the upper left conrer. Press the channel +/- to select the
preferred item; press the volume +/- to adjust the value of each item.
4.2 Item introduction
TMPA8823/5VA4 BUS DATA
Comment int
RCUT R CUTOFF 2C FF 20R Cut off 00:-0.65V, 80:0V, FF:0.65V
GCUT G CUTOFF 20 FF 20G Cut off 00:-0.65V, 80:0V, FF:0.65V
BCUT B CUTOFF 47 FF 20B Cut off 00:-0.65V, 80:0V, FF:0.65V
GDRV G DRIVE 3B 7F 40G Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB
BDRV B DRIVE 37 7F 40B Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB
CNTX SUB CONTRAST 7F 7F 7FUnicolor 00:-20dB, 40:-5dB, 7F:0dB
BRTC SUB BRIGHT CEN 51 7F 50Brightness 00:1.5V(pedestal level), 40:2.5V,
COLC 2C 7F 40Color 00:color mute, 01:-22dB or less, 7f:5.7dB
TNTC SUB TINT CEN 40 7F 40
COLP PAL SUB COLOR 00 7F 00
Max
1
2
Tint: 00:-35°
40:0°, 7F:35°
4
COLS SECAM SUB COLOR 32 7F 40
r
r
r
r
r
r
p
r
r
,
)
,
r
g
)
,
,
SCOL SUB COLOR(for 07 07 07UV converter, For Y Cr Cb input
SCNT SUB CONTRAST 09 0F 0ASub-Contrast 0: -4.3dB, 8:0dB, F:3.8dB
CNTC SUB CONTRAST CEN 3F 7F 48
CNTN SUB CONTRAST MIN 08 7F 08
BRTX BRIGHT MAX 20 7F 20Difference form cente
BRTN BRIGHT MIN 20 7F 30Difference form cente
COLX COLOR MAX 35 7F 3FDifference form cente
COLN COLOR MIN 00 7F 00
TNTX TINT MAX 28 7F 3FDifference form cente
TNTN 28 7F 3FDifference form cente
SVD SHARP CENTER in 19 3F 28Sharpness 00:-9dB, 20:0dB, 3F:10dB
ASSH Asymmetry-sharpness 09 07 04Asymmetric sharpness 0:0dB, 4:4.5dB, 7:8.5dB
SHPX SHARP MAX 1A 3F 3FDifference f orm cente
SHPN SHARP MIN 1A 12Difference form cente
TXCX UV COLOR MAX. 1F 1F 1FUV SUB COLOR For YcrCb input
RGCN UV COLOR MIN. 16 1F 1FUV SUB COLOR For YcrCb input
ABL ABL data 27
DCBS A part of video data 22 FF 24
CLTM
CLVO
CLVD The data when DVD 40 FF 40
DEF 01 01 01V AGC reference, depends on 0:YC Vcc,
The data when TV
mode
The data when AV
mode
FF
04 FF 28
43
35
FF 2F
ness 00:-9dB, 20:0dB, 3F:10dB
Bit7: Nouse
Bit6: Nouse
Bit5: RGB OSD ABL 0:ABL active for OSD
Bit4: YPL 0:Y peak limiter on,105IRE, 1: Y peak
Bit3,2:ABL Start Point 00:0V 01:-0.15V 10:Bit1,0:ABL Gain 00:-0.17V 01:-0.35V 10:Bit7:Blank SW 0:H
Bit6:No use
Bit5,4:OSD Level 00:50IRE, 01:60IRE, 10:70IRE,
Bit3,2:Yγpoint,-3dB 00:off, 01:90IRE, 10:82IRE,
Bit1,0:No use
The data when TV mode
Bit7: F-ID 0:Normal, 1:Always killer off,i.e.
Bit6: P/N ID Sens 0:NTSC killer sensitivity,1.5mVpBit5:color gamma off 0:off, 1:on
Bit4,3:NTSCmatrix 00:NTSC1(93 °
10/11:DVD for U/V inputs
Bit2,0:Y D.L. 000:-40ns 001:0ns 010:+40ns
100:+120ns 101:+160ns 110:+200ns
The data when AV mode
Bit7: F-ID 0:Normal, 1:Always killer off,i.e.
Bit6: P/N ID Sens 0:NTSC killer sensitivity,1.5mVpBit5:colo
Bit4,3: NTSC matrix 00:NTSC1(93 °
10/11:DVD for U/V inputs
Bit2
100:+120ns 101:+160ns 110:+200ns
amma off 0:off, 1:on
0:Y D.L. 000:-40ns 001:0ns 010:+40ns
V blanking on, 1:H,V blanking
5
03 3F 00AKB system mode(No use)
j
,6,
p
,6,5,
,6,5,
,
RSNS R SENSE 28 3F 00
GSNS G SENSE 30 3F 00
BSNS B SENSE 2D 3F 00
HPOS 60Hz Horizontal 17 1F 1000:-3us, 10:0, 1F:3us
BASC BASS Center 40 72 40User Bass Level
BASX BASS MAX 72 72 72User Bass Level
TREC TREBLE Center 40 72 40User Treble Level
BALC BALANCE Center 3F 72 40User Balance Level
WOFC WOOFER Center 39 7F 40User Woffer Level
BAS1 BASS data in “Music” 68 CBBit0-6: Bass level, bit7:Surround select.0
BAS2 BASS data in “News” 40 FF 3CBit0-6: Bass level, bit7:Surround select.0
BAS3 BASS data in “Theater” 4A FF CBBit0-6: Bass level, bit7:Surround select.0
TRE1 TREBLE data in 68 FF 55Bit0-6: Treble level, bit7:Surround select.1
TRE2 TREBLE data in 40 FF 37Bit0-6: Treble level, bit7:Surround select.1
TRE3 TREBLE data in 54 FF A8Bit0-6: Treble level,
WFL1 Woofer data in “Music” F2 FF CBBit0-6: Woofer level, bit7:Woofer On/Off 1:On
WFL2 Woofer data in “News” 31 FF 99Bit0-6: Woofer level, bit7:Woofer On/Off 1:On
WFL3 Woofer data in D9 FF E4Bit0-6: Woofer level, bit7:Woofer On/Off 1:On
WON1 Woofer output level 0A FF 05For the calculation of the Woofer output value.
WON2 Woofer output level 09 FF 09For the calculation of the Woofer output value.
Bit7: Fs
Bit6: Nouse
Bit5: Fsync det ( set 0
Bit4: When B.B,OSD frequence 0:50Hz, 1:60Hz
Bit3: Ftb1231n audio gain(au gain VCD 14h)
Bit2: Fymute use
Bit1: F bb exmute
Bit0: F bb mute
Bit7: Fjpstereo(select 1343) 1:select 0:unselect 立
Bit6: set 0
Bit5 :Fdvd audio av2
Bit4: no use
Bit3: set 0
Bit2: F
Bit1: F
Bit0: Fsel video2
Bit7: F
Bit6: Fjpswoofe
nc det blue back (set 1)
wm balance
wm8 volume
sanyoke
n
8
Bit5 :set 0
,
Bit4: Fselect tda9850 打开
Bit3: Fslice level
Bit2: F lan s out (shopout spanlish)
Bit1: F lanpout (shop out portguese)
Bit0: Fmono avout 0:mono 1: stereo
General, these failures are produced by power sources, because of which refer to a wider area, so that can be divided them
two conditions to explain: no B1 115 V and existing B1 115V.
(1) No B1 (115 V) voltage (voltage of network 220 V ac)
These failures may be caused by power supply switch.
0V
Check C807,V813
at
condition of
short-circuit?
0V
Check C807(+) voltage
Check voltage+B
Y
Replace the
parts of
failure
Check R820 R811
V813
(2) Existing B1 115 V
0V
Check T804
300V
Check V813 b
voltage
0.5V
Check V813 b voltage
0.7V0
Check VD814 VD817
VD818 C814 C815
C817
These failures may be caused by abnormal operation of horizontal scan, to confirm which can observe the filament of
10
tube whether bright on. If determined horizontal scan in abnormal operation, look for the failure start from the horizontal
drive stage. Search upward to TMPA8821 with method of checking DC voltage and waveform according to sequence:
PIN13/H.OUT port→ PIN17 power supply→ N802/9V output.
N
Check B2(27V)
voltage
Check voltage at 17 pin of
TMPA8821 =9 V
Y
Check voltage at 13
pin of TMPA8821
=1.9 V
27V 0
Check VD853 Check V431 T402
Check V898 R850
6.2 Existing grating and no picture
Check the voltage of PIN29
36 44 49 of N501
Normal
Check V2in waveform
existed at PIN24 of N501
Check OSD on screen
Abnormal
Check N001
Check N501 N701 G701
Y
Check N501
N
NY
Check N501
Y
N
Check TVin waveform
at N001/PIN14
* : Whenever open or
interconnect on the bus from
CPU to E2PROM and main
chip, no picture can occur.
NY
Check N001
Check circuit between
PIN41~PIN42 of N501
11
6.3 Existing grating and picture, no sound
Abnormal
Check waveform at
pin2 4 of N501
Y
Check N501
Y
Check N501
6.4 Cannot save channels
Check the audio signal of + pins of
two loudspeaker
Check loudspeaker
N
Check waveform at
pin15 of N002
N
Check waveform
at pin 4of N002
Y N
Check R023
Normal
Check N002
C010
Y
Check SYNC waveform
at N501/PIN62
Y
Check N501
Check SYNC waveform at
6.5 CPU non-operating
N
Check N803 T804
When searching automatically channels,
observe whether can display picture
N
Check tuner
V708 V709 V710
Check voltage at PIN9 54 of N501 =5V
Y
N
Check VT voltage of
TUNER=0--30 V
voltage
N
N
N
Y
Check 33 V of
Y
CheckN501 V713Check R723 and N721
Y
Check voltage at
N501/PIN5
(RESET)=5V
Check N501 G701
Check V703 VD701
12
13
N° Boletín
Identificación del Producto
Modelos
2166
TELEVISOR COLOR
TVS-1430 MA
TVS-2142MA
TVS-2152PF
Fecha
Procedencia / Marca
21/06/2006
SANYO
Falla Reportada / Motivo :
METODO PARA ENTRAR AL MODO DE SERVICIO DEL TELEVISOR.
Solución aplicada :
La “D” en el Manual de Servicios significa Modo “D”. Los modos de fábrica son el Modo “S” y el
Modo “D”. En el modo “S” sólo se pueden ajustar algunos parámetros; mientras que en el modo
“D” se pueden ajustar todos los parámetros. Para los Chasis TMPA8823 (TV´s de 14” hasta
21”) y TMPA8859 (TV´s de 25” hasta 34”), se puede acceder al modo “S” utilizando el control
remoto del usuario siguiendo los siguientes pasos:
Presione el botón VOL - en el panel de la TV hasta 0 (no suelte el botón VOL -), luego presione
el botón DISPLAY en el control remoto para entrar al modo S.
Si se quiere acceder al modo “D”, para el Chasis TMPA8823 (TV´s de 14” hasta 21”), siga los
siguientes pasos utilizando el control remoto:
Primero siga los pasos para entrar al modo “S”.
Presione el botón DISPLAY en el Control Remoto.
Presione el botón VOL - en el panel de la TV hasta 0 (no suelte el botón VOL -), luego presione
el botón DISPLAY en el control remoto para entrar al modo D.